gartland



(No Model.)

P. X. GARTLAND.

COMBINED GAS AND ELECTRIC LIGHT FIXTURE.

No.- 490,903. I Patented Jan. 31, 1893.

F //vv/vr0 Q a @QMLQMWW 5. W By UNITED STATES ew rules.

FRANCIS-X. GARTLIANZD, on PHILADELPHIA, PaNNsYLvAnra.

COMBINED GAS AND eLso'rmo LBGHT FEXTURE.

srncmxcnrrorr forming part of Letters Patent No. 490,903, dated January31, 1898.

Application filed January 22, 1892. Serial no. 419.045. on model.)

To all whom it may concern: I Be it known that I, FRANCIS X. GARTLANID,a citizen of the United States, residing in the cityand county ofPhiladelphia, State of Pennsylvania, have invented a new and. usefulImprovement in Couplings for Electric and Gas Conductors, whichimprovement is fully set forth in thefollowing specificationandaccompanying drawings.

Myinvention consists of acoupling for electrio and gas conductors havingan interlock ing plug between its knuckles, insulated in said knucklesand pipes having openings for the conductors and connected with saidknuckles, the plug having a bore with openings on opposite sides andcommunicating with the said pipes.

It v further consists .of the combination of parts hereinafter setforth.

the knuckle B, said contact rings Figure 1 represents a perspective viewof conductor embodying my invention. Fig. 2 represents a longitudinalsection thereof.

tached portions thereof. a

Similarletters of reference indicate corresponding parts in the severalfigures..

Referring to the drawings:-A and B des-' ignate the knuckles of acoupling, the knuckle A being between the collars of the knuckle B, saidknuckles being connected cap D at one end, and the screw E and asuitablewasher at the other end. The knuckle A is provided with a branch pipe F,and the knuckle B with a branch pipe G, and an arm G, each branch havingin its wall the open-.

ings H, H, for the passage of the electric conductors J, J. In the endsof the knuckle A, are contact rings K, which are in contact with contactrings L located within the collars of K, L, being suitably insulatedfrom the knuckles and having the conductors J connected with them asfollowsz-The conductors in the branch F lead to and are connected withthe contact rings in the knuckle'A. The conductors in" the branch G,lead from and. are connected with the contact rings in the knuckle B. -IThe plug C,"has a bore M which opens in opand recesses N around the*peposite places,

. riphery of the plug communicating with the 'ends of said bore. One ofthe recesses comcontact rings .by a plate Q,

N byaconicalj plug (3, which is retained in position bythe the samebeing provided in said knuckle, and

municates with the bore of the branch F, and the other recesscommunicates with a bore P,

in the upper collar of the knuckle B, said here communicating with thebore of the branch G, it being seen that gas is admitted into the branchG, passes through the bore P, and is thus directed into the bore M fromwhenceit enters the bore of the branch F, by-which'it is conveyed to thefixture or attachment. Should the knuckles be turned from'the right lineshown in Fig. 2, the gas is not out o&, as the recesses N form thecommunication for the bore P with the bore M, and that of the bore Mwith the bore of the branch F.

In the arm G which connectsthejcollars of the-knuckle B, there is achannel, to permit the portion J of the conductor J therein to pass fromthe contact ring in the lower collar of the knuckle B,to the said branchG, said portionJ beiu g covered on the inner side and said plate beingsecured thereto by means of a screw R. The plate is accessible when theknuckle Ais removed from the knuckle" B, and may be detached, thusuncovering the portionJ' of the conductor, applicatiomremoval orrepairs. It will be seen that-when the knuckles are turned so as tochange the direction ofthe conductors, the contact rings K and L alwaysremain in contact, thus maintaining the electric circuit and theconductors are not twisted or strained. The branch is provided with acutting oh? and letting on the dent.

gas, as is evi- The insulating material for the contact rings K in theknuckle, is in the form of grooved disks K, to receive said contactrings,

with tongues K", which enter grooves K of the arm G,

for purpose of gas key S, for

7 proper opening H in engage with the walls thereof, whereby twisting orturning of said contact rings, and consequent breaking or disconnectionof the conductors J is prevented when the knuckles are rotated, itbeing-evident that the disks, contact rings-and conductors. move as onewith the knuckle A.

Having thus described my invention, what claim as new, and desire tosecure by Letters Patent, is:---

1. A coupling-for electric conductors con-v sisting of knuckles with aninterlocking plug, contact rings insulated in said'knnckles. and

pipes connected with said knuckles and provided with openings for theelectric conductors, said plug having a bore opening on opposite sidesof the plug and communicating with the bores of the pipes, said partsbeing combinedsubstantially as described.

. 2. A coupling for electric conductors consisting of knuckleswith aninterlocking plug, insulated contact rings in said knuckles, pipesconnected with each of said knuckles having openings therein, electricconductors in the openings in each knuckle leading to the contact ringsin the said knuckle, and an arm on one of said knuckles having a passagefor a portion of an electric conductor from its contact ring to theopening in the pipe, said parts being combined substantially asdescribed.

3. A coupling for electric conductors having knuckles with aninterlocking plug, insulated rings in said knuckles, electric conductorsconnected with said rings and pipes connected with said knuckles havingopenings for said conductors, the bore of said plug having openings onopposite sides in peripheral recesses of said plug, and communicatingwith the bores of the said pipes, said parts being combinedsubstantially as described.

4. A coupling for electric conductors having knuckles with groovestherein, an interlocking. plug contact rings in said knuckles,

insulating grooved disks receiving said rings and having tonguesentering said grooves in the knuckles, and engaging with the wallsthereof, and pipes connected with said knuckles, said parts beingcombined substantially as described.

, FRANCIS X. eAaTLAND.

Witnesses:

JOHN A. WIEDERSHEIM, A. P. JENNINGS.

